| | | Reporting criterion |
|---|
| 05000286/LER-1983-001-03, /03L-0:on 830422,during Processing of Water from Chemical & Vol Control Sys Holdup Tank 33 to Waste Sys,Partial Deformation of Tank Occurred Due to Low Pressure.Caused by Vacuum Due to Closed Vent | /03L-0:on 830422,during Processing of Water from Chemical & Vol Control Sys Holdup Tank 33 to Waste Sys,Partial Deformation of Tank Occurred Due to Low Pressure.Caused by Vacuum Due to Closed Vent | |
| 05000247/LER-1983-001-03, /03L-0:on 830108,MSIV MS-1-22 for Steam Generator 22 Failed to Close During Valve Closure Testing.Caused by Jamming of Valve Disc Against Vertical Wall of Valve Disc Stop.Vertical Wall Ground to Increase Clearance | /03L-0:on 830108,MSIV MS-1-22 for Steam Generator 22 Failed to Close During Valve Closure Testing.Caused by Jamming of Valve Disc Against Vertical Wall of Valve Disc Stop.Vertical Wall Ground to Increase Clearance | |
| 05000247/LER-1983-001, Forwards LER 83-001/03L-0 | Forwards LER 83-001/03L-0 | |
| 05000286/LER-1983-002-03, /03L-0:on 830512,during Refueling Outage,Small Leak Identified on RHR Miniflow Line at Weld Joint Between Valve 1870 & Line 337.Cause Not Stated.Leak Isolated,Section of Pipe Repaired & Downstream Reducer Replaced | /03L-0:on 830512,during Refueling Outage,Small Leak Identified on RHR Miniflow Line at Weld Joint Between Valve 1870 & Line 337.Cause Not Stated.Leak Isolated,Section of Pipe Repaired & Downstream Reducer Replaced | |
| 05000247/LER-1983-002-03, /03L-0:on 830125,during Full Power,All 53 Control RPIs Shifted Downscale by Approx 24%.Caused by Anomalous Condition on Westinghouse Proteus 2500 Computer Signal Input Cards During Removal of Ac Power | /03L-0:on 830125,during Full Power,All 53 Control RPIs Shifted Downscale by Approx 24%.Caused by Anomalous Condition on Westinghouse Proteus 2500 Computer Signal Input Cards During Removal of Ac Power | |
| 05000247/LER-1983-002, Forwards LER 83-002/03L-0 | Forwards LER 83-002/03L-0 | |
| 05000247/LER-1983-003, Forwards LER 83-003/01T-0 | Forwards LER 83-003/01T-0 | |
| 05000286/LER-1983-003-03, /03L-0:on 830531,while in Hot Shutdown,Leak Observed at elbow-to-pipe Weld on Charging Pump 31 Relief Line.Leak Located on Line 210 Downstream of Relief Valve RV231.Caused by Vibration | /03L-0:on 830531,while in Hot Shutdown,Leak Observed at elbow-to-pipe Weld on Charging Pump 31 Relief Line.Leak Located on Line 210 Downstream of Relief Valve RV231.Caused by Vibration | |
| 05000247/LER-1983-004, Forwards LER 83-004/03L-0 | Forwards LER 83-004/03L-0 | |
| 05000247/LER-1983-004-03, /03L-0:on 830301,shaft Matl in RHR Pump 22 Found to Be Carbon Steel Instead of Originally Specified Stainless Steel.Caused by Westinghouse Error.Present Motor/Pump Shaft Will Be Replaced | /03L-0:on 830301,shaft Matl in RHR Pump 22 Found to Be Carbon Steel Instead of Originally Specified Stainless Steel.Caused by Westinghouse Error.Present Motor/Pump Shaft Will Be Replaced | |
| 05000286/LER-1983-004-03, /03L-0:on 830604,leak Observed at elbow-to-pipe Weld on Charging Pump 31 Relief Line 210 Downstream of Relief Valve RV231.Cause Not Stated.Valve 231 Replaced & Pump Returned to Svc | /03L-0:on 830604,leak Observed at elbow-to-pipe Weld on Charging Pump 31 Relief Line 210 Downstream of Relief Valve RV231.Cause Not Stated.Valve 231 Replaced & Pump Returned to Svc | |
| 05000286/LER-1983-005-01, /01T-0:on 831011,during Cold Shutdown,Determined Design of Drain Line 339 on Each Accumulator Is Such That Seismic & Nonseismic Line Connected by Normally Open Manual Valve.Procedures Revised | /01T-0:on 831011,during Cold Shutdown,Determined Design of Drain Line 339 on Each Accumulator Is Such That Seismic & Nonseismic Line Connected by Normally Open Manual Valve.Procedures Revised | |
| 05000247/LER-1983-005, Forwards LER 83-005/03L-0 | Forwards LER 83-005/03L-0 | |
| 05000247/LER-1983-005-03, /03L-0:on 830308,while Bringing Auxiliary Feedwater Pump Up to Operating Speed for Bimonthly Surveillance Testing,Outboard Bearing Started to Smoke. Caused by Pump Bearing Needing Repacking.Pump Repacked | /03L-0:on 830308,while Bringing Auxiliary Feedwater Pump Up to Operating Speed for Bimonthly Surveillance Testing,Outboard Bearing Started to Smoke. Caused by Pump Bearing Needing Repacking.Pump Repacked | |
| 05000286/LER-1983-006-01, /01T-0:on 831017,established Steel Plates Holding Svc Water Pump 31,32 & 36 Seismic Restraint Collars Not in Place.Caused by Plates Not Replaced After Maint.Missing Pieces Will Be Replaced | /01T-0:on 831017,established Steel Plates Holding Svc Water Pump 31,32 & 36 Seismic Restraint Collars Not in Place.Caused by Plates Not Replaced After Maint.Missing Pieces Will Be Replaced | |
| 05000247/LER-1983-006, Forwards LER 83-006/03L-0 | Forwards LER 83-006/03L-0 | |
| 05000247/LER-1983-006-03, /03L-0:on 830316,reactor Cavity Continuous Sump Level Monitor Indicated 3 Ft Above Normal & Declared Inoperable.Caused by Drifted Output from Level Transmitter Lt 3302 in Conservative Direction.Transmitter Recalibr | /03L-0:on 830316,reactor Cavity Continuous Sump Level Monitor Indicated 3 Ft Above Normal & Declared Inoperable.Caused by Drifted Output from Level Transmitter Lt 3302 in Conservative Direction.Transmitter Recalibr | |
| 05000247/LER-1983-007-03, /03L-0:on 830322,svc Water Pump 26 Removed from Svc Due to Inoperable Strainer.Caused by Sheared Key Connecting Drive Motor to Filter Shaft Due to Excessive Debris Accumulation within Strainer Basket.Basket Cleaned | /03L-0:on 830322,svc Water Pump 26 Removed from Svc Due to Inoperable Strainer.Caused by Sheared Key Connecting Drive Motor to Filter Shaft Due to Excessive Debris Accumulation within Strainer Basket.Basket Cleaned | |
| 05000247/LER-1983-007, Forwards LER 83-007/03L-0 | Forwards LER 83-007/03L-0 | |
| 05000247/LER-1983-008-03, /03L-0:on 830328,electric Heat Trace Circuit 51B Found W/Inoperable Primary Circuit.Caused by Primary Heating Element to Be Open Circuit.Element Replaced. Circuit Tested & Returned to Svc | /03L-0:on 830328,electric Heat Trace Circuit 51B Found W/Inoperable Primary Circuit.Caused by Primary Heating Element to Be Open Circuit.Element Replaced. Circuit Tested & Returned to Svc | |
| 05000247/LER-1983-008, Forwards LER 83-008/03L-0 | Forwards LER 83-008/03L-0 | |
| 05000247/LER-1983-009, Forwards LER 83-009/03L-0 | Forwards LER 83-009/03L-0 | |
| 05000247/LER-1983-009-03, /03L-0:on 830331,when Operator Attempted to Start Safety Injection Pump 23 During steady-state Operation,Pump Motor Breaker Failed to Close.Caused by Seized Closing Solenoid.Breaker Replaced | /03L-0:on 830331,when Operator Attempted to Start Safety Injection Pump 23 During steady-state Operation,Pump Motor Breaker Failed to Close.Caused by Seized Closing Solenoid.Breaker Replaced | |
| 05000247/LER-1983-010, Forwards LER 83-010/03L-0 | Forwards LER 83-010/03L-0 | |
| 05000247/LER-1983-010-03, /03L-0:on 830401,svc Water Pump 25 Declared Inoperable When Pump Could Not Be Restarted After Pump Trip. Caused by Nylon Rope from Old Cathodic Protection Sys in Travelling Screens Wrapping Around Impeller & Shaft | /03L-0:on 830401,svc Water Pump 25 Declared Inoperable When Pump Could Not Be Restarted After Pump Trip. Caused by Nylon Rope from Old Cathodic Protection Sys in Travelling Screens Wrapping Around Impeller & Shaft | |
| 05000247/LER-1983-011-03, /03L-0:on 830413,during Inservice Valve Test,Valve 887B in Suction Line to Safety Injection Pump 22 Found Inoperative.Valve 887A Operable.Caused by Pinched & Grounded Wire for Motor on Limitorque Valve Operator | /03L-0:on 830413,during Inservice Valve Test,Valve 887B in Suction Line to Safety Injection Pump 22 Found Inoperative.Valve 887A Operable.Caused by Pinched & Grounded Wire for Motor on Limitorque Valve Operator | |
| 05000247/LER-1983-012-03, /03L-0:on 830419,reactor Cavity Continuous Sump Level Monitor LI-3302 Indicated Above 20-ft,but Independent Cavity Level Alarm Did Not Annunciate.Reactor Cavity Found Dry.Caused by Instrument Drift | /03L-0:on 830419,reactor Cavity Continuous Sump Level Monitor LI-3302 Indicated Above 20-ft,but Independent Cavity Level Alarm Did Not Annunciate.Reactor Cavity Found Dry.Caused by Instrument Drift | |
| 05000247/LER-1983-013-03, /03L-0:on 830420,during Surveillance Testing of Containment Isolation Valves,Valve 1702 Did Not Fully Close. Cause Not Stated.Shaft & Inside of Actuator Cleaned.Air Motor Diaphragm Replaced as Preventive Measure | /03L-0:on 830420,during Surveillance Testing of Containment Isolation Valves,Valve 1702 Did Not Fully Close. Cause Not Stated.Shaft & Inside of Actuator Cleaned.Air Motor Diaphragm Replaced as Preventive Measure | |
| 05000247/LER-1983-014-03, /03L-0:on 830421,charging Pump 21 Developed Leak & Declared Inoperable.Caused by Defective Head Gasket on Cylinder Head 4.Gasket Replaced | /03L-0:on 830421,charging Pump 21 Developed Leak & Declared Inoperable.Caused by Defective Head Gasket on Cylinder Head 4.Gasket Replaced | |
| 05000247/LER-1983-015-03, Shutdown Initiated When Containment Spray Pump 21 Operability Criteria Not Met & Diesel Generator 23 Out of Svc for Maint.Pump 21 Removed from Svc Due to High Vibrations | Shutdown Initiated When Containment Spray Pump 21 Operability Criteria Not Met & Diesel Generator 23 Out of Svc for Maint.Pump 21 Removed from Svc Due to High Vibrations | |
| 05000247/LER-1983-016-03, /03L-0:on 830422,boron Injection Tank Level Channel 944F Became Inoperable.Caused by Erroneous Level Indication Due to Boric Acid Solidification in Instrument Impulse Line.Affected Impulse Line Cleaned | /03L-0:on 830422,boron Injection Tank Level Channel 944F Became Inoperable.Caused by Erroneous Level Indication Due to Boric Acid Solidification in Instrument Impulse Line.Affected Impulse Line Cleaned | |
| 05000247/LER-1983-017-03, /03L-0:on 830422,leak Observed in Isolation Valve Seal Water Sys.Caused by Damage to 3/8-inch Stainless Steel Weld Connection FW10016.Weld Repaired | /03L-0:on 830422,leak Observed in Isolation Valve Seal Water Sys.Caused by Damage to 3/8-inch Stainless Steel Weld Connection FW10016.Weld Repaired | |
| 05000247/LER-1983-018-03, /03L-0:on 830422,plant Shutdown Commenced When Binding of Valve 1870 Could Not Be Corrected within Tech Spec Time Period.Cause Not Stated.Binding Alleviated by Lubricating Valve Stem & Universal Joints | /03L-0:on 830422,plant Shutdown Commenced When Binding of Valve 1870 Could Not Be Corrected within Tech Spec Time Period.Cause Not Stated.Binding Alleviated by Lubricating Valve Stem & Universal Joints | |
| 05000247/LER-1983-019-03, /03L-0:on 830422,valve 743,nonautomatic Containment Isolation Valves in RHR Pump Miniflow Line Would Not Operate.Cause Not Stated.Reach Rods Disconnected & Valve Stem & Universal Joints Cleaned & Lubricated | /03L-0:on 830422,valve 743,nonautomatic Containment Isolation Valves in RHR Pump Miniflow Line Would Not Operate.Cause Not Stated.Reach Rods Disconnected & Valve Stem & Universal Joints Cleaned & Lubricated | |
| 05000247/LER-1983-020-03, /03L-0:on 830420,high Steam Flow Bistable FC449A Setpoint Found Higher than Tech Spec Limit.Caused by Defective Internal Dc Power Supply Board.Board Replaced & Bistable Reset | /03L-0:on 830420,high Steam Flow Bistable FC449A Setpoint Found Higher than Tech Spec Limit.Caused by Defective Internal Dc Power Supply Board.Board Replaced & Bistable Reset | |
| 05000247/LER-1983-021-03, /03L-0:on 830422,analysis Revealed Adsorption Efficiency for Methyl Iodine of 82.2%.Cause Under Investigation.Charcoal Filters Replaced | /03L-0:on 830422,analysis Revealed Adsorption Efficiency for Methyl Iodine of 82.2%.Cause Under Investigation.Charcoal Filters Replaced | |
| 05000247/LER-1983-022-03, /03L-0:on 830510,valve 850A in Safety Injection Pump Discharge Header Could Not Be Fully Closed.Cause Unknown.Valve Closed by Hand to Clear Seat of Solidified Boric Acid | /03L-0:on 830510,valve 850A in Safety Injection Pump Discharge Header Could Not Be Fully Closed.Cause Unknown.Valve Closed by Hand to Clear Seat of Solidified Boric Acid | |
| 05000247/LER-1983-023-03, /03L-0:on 830517,during Normal Operation,Motor Operator Would Not Close Valve 205 in Charging Line to Rcs. Cause Unknown.Motor Tested W/Valve Linkage Disconnected. Closing Torque Switch Adjusted | /03L-0:on 830517,during Normal Operation,Motor Operator Would Not Close Valve 205 in Charging Line to Rcs. Cause Unknown.Motor Tested W/Valve Linkage Disconnected. Closing Torque Switch Adjusted | |
| 05000247/LER-1983-024-03, /03L-0:on 830527,during Normal Operation,Boron Injection Tank Level Channel 944F Became Inoperable.Caused by Erroneous Level Indication Due to Solidification of Boric Acid in Instrument Line.Affected Line Cleared | /03L-0:on 830527,during Normal Operation,Boron Injection Tank Level Channel 944F Became Inoperable.Caused by Erroneous Level Indication Due to Solidification of Boric Acid in Instrument Line.Affected Line Cleared | |
| 05000247/LER-1983-025-03, Flow Control Valve 406A on Auxiliary Feedwater Pump 21 Discharge Line to Steam Generator 21 Did Not Open During Surveillance Test.Caused by Chipped Valve Cage.Cage & Gaskets Replaced | Flow Control Valve 406A on Auxiliary Feedwater Pump 21 Discharge Line to Steam Generator 21 Did Not Open During Surveillance Test.Caused by Chipped Valve Cage.Cage & Gaskets Replaced | |
| 05000247/LER-1983-027-03, /03L-0:on 830715,during Normal Operation,Reactor Cavity Sump Level Monitor Indicated High Water Level.Caused by Drifting of Reactor Cavity Continuous Level Transmitter Output.Transmitter Monitored | /03L-0:on 830715,during Normal Operation,Reactor Cavity Sump Level Monitor Indicated High Water Level.Caused by Drifting of Reactor Cavity Continuous Level Transmitter Output.Transmitter Monitored | |
| 05000247/LER-1983-028-03, /03L-0:on 830716,during Normal Operation,One of Three Required Boron Injection Tank Level Channels Became Inoperable.Caused by Erroneous Level Indication Due to Solidification of Boric Acid on Impulse Line | /03L-0:on 830716,during Normal Operation,One of Three Required Boron Injection Tank Level Channels Became Inoperable.Caused by Erroneous Level Indication Due to Solidification of Boric Acid on Impulse Line | |
| 05000247/LER-1983-029-03, /03L-1:on 830720,analysis Revealed Absorption Efficiencies for Methyliodine of 92.9 & 95% in Charcoal Filters.Caused by Change in Acceptance Criteria.Charcoal Replaced | /03L-1:on 830720,analysis Revealed Absorption Efficiencies for Methyliodine of 92.9 & 95% in Charcoal Filters.Caused by Change in Acceptance Criteria.Charcoal Replaced | |
| 05000247/LER-1983-030-03, /03L-0:on 830727,during Full Power Operation, Hourly Fire Watch Not Performed for 1 H.Caused by Security Lieutenant Ordering Guard to Fixed Post,Interrupting Patrol. Patrol Resumed | /03L-0:on 830727,during Full Power Operation, Hourly Fire Watch Not Performed for 1 H.Caused by Security Lieutenant Ordering Guard to Fixed Post,Interrupting Patrol. Patrol Resumed | |
| 05000247/LER-1983-031-03, /03L-0:on 830729,during Review of Nonlicensed Operator Log Sheets,Isolation Valve Seal Water Sys Tank Pressure Logged at Pressures Lower than Tech Spec.Caused by Procedural Error.Procedures Revised | /03L-0:on 830729,during Review of Nonlicensed Operator Log Sheets,Isolation Valve Seal Water Sys Tank Pressure Logged at Pressures Lower than Tech Spec.Caused by Procedural Error.Procedures Revised | |
| 05000247/LER-1983-032-03, /03L-0:on 830806,pinhole Leak Discovered on 3/4- Inch Safety Injection Pump Test Pipe to Relief Valve 855. Cause Unknown.Leak Will Be Inspected During Biweekly Containment Insps.Correction Will Be Reported | /03L-0:on 830806,pinhole Leak Discovered on 3/4- Inch Safety Injection Pump Test Pipe to Relief Valve 855. Cause Unknown.Leak Will Be Inspected During Biweekly Containment Insps.Correction Will Be Reported | |
| 05000247/LER-1983-033-03, /03L-0:on 830828,while in Hot Shutdown,Msiv for Loop 21 Failed to Completely Close During Isolation of Secondary Plant for Maint.Caused by Insufficient Lubrication of Valve Stem Packing.Stem Packing Lubricated | /03L-0:on 830828,while in Hot Shutdown,Msiv for Loop 21 Failed to Completely Close During Isolation of Secondary Plant for Maint.Caused by Insufficient Lubrication of Valve Stem Packing.Stem Packing Lubricated | |
| 05000247/LER-1983-034-03, /03L-0:on 830916,containment Gas & Particulate Monitors R-11 & R-12 Declared Inoperable When Monitors Read Downscale.Cause Not Stated.Connector Repaired & Minor Adjustments Made | /03L-0:on 830916,containment Gas & Particulate Monitors R-11 & R-12 Declared Inoperable When Monitors Read Downscale.Cause Not Stated.Connector Repaired & Minor Adjustments Made | |
| 05000247/LER-1983-035-03, /03L-0:on 831004,brief Interruption in 6.9 Kv Power Experienced.Caused by Malfunctioning Westinghouse PMG-13 Pilot Wire Monitor & Transfer Tripping Relay & Transfer Trip Section.Breakers Reclosed | /03L-0:on 831004,brief Interruption in 6.9 Kv Power Experienced.Caused by Malfunctioning Westinghouse PMG-13 Pilot Wire Monitor & Transfer Tripping Relay & Transfer Trip Section.Breakers Reclosed | |
| 05000247/LER-1983-036-01, /01T-0:on 831013,during Cold Shutdown,Westinghouse Reported That Vendor Procured Barton Pressure Transmitters W/Previously Undefined Errors at Both Abnormal & Accident Temp Conditions | /01T-0:on 831013,during Cold Shutdown,Westinghouse Reported That Vendor Procured Barton Pressure Transmitters W/Previously Undefined Errors at Both Abnormal & Accident Temp Conditions | |